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com.arcbees.chosen.client.ChosenImpl Maven / Gradle / Ivy
/*
* Copyright 2015 ArcBees Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.arcbees.chosen.client;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import com.arcbees.chosen.client.SelectParser.GroupItem;
import com.arcbees.chosen.client.SelectParser.OptionItem;
import com.arcbees.chosen.client.SelectParser.SelectItem;
import com.arcbees.chosen.client.event.ChosenChangeEvent;
import com.arcbees.chosen.client.event.ChosenEvent;
import com.arcbees.chosen.client.event.HidingDropDownEvent;
import com.arcbees.chosen.client.event.ReadyEvent;
import com.arcbees.chosen.client.event.ShowingDropDownEvent;
import com.arcbees.chosen.client.event.UpdatedEvent;
import com.arcbees.chosen.client.resources.ChosenCss;
import com.arcbees.chosen.client.resources.Resources;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.RepeatingCommand;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.InputElement;
import com.google.gwt.dom.client.NodeList;
import com.google.gwt.dom.client.OptionElement;
import com.google.gwt.dom.client.SelectElement;
import com.google.gwt.dom.client.Style;
import com.google.gwt.dom.client.StyleInjector;
import com.google.gwt.i18n.client.LocaleInfo;
import com.google.gwt.query.client.Function;
import com.google.gwt.query.client.GQuery;
import com.google.gwt.regexp.shared.RegExp;
import com.google.gwt.safecss.shared.SafeStyles;
import com.google.gwt.safecss.shared.SafeStylesBuilder;
import com.google.gwt.safecss.shared.SafeStylesUtils;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.Window;
import com.google.web.bindery.event.shared.EventBus;
import com.google.web.bindery.event.shared.HandlerRegistration;
import static com.google.gwt.query.client.GQuery.$;
import static com.google.gwt.query.client.GQuery.document;
import static com.google.gwt.safehtml.shared.SafeHtmlUtils.fromTrustedString;
public abstract class ChosenImpl {
static final int BACKSPACE = 8;
static final String TABINDEX_PROPERTY = "tabindex";
private static final int TAB = 9;
private static final int ENTER = 13;
private static final int SHIFT = 16;
private static final int CTRL = 17;
private static final int ESCAPE = 27;
private static final int UP_ARROW = 38;
private static final int DOWN_ARROW = 40;
private static final int LEFT_WINDOW_KEY = 91;
private static final RegExp containerIdRegExp = RegExp.compile("[^\\w]", "g");
private static final int HORIZONTAL_OFFSET = -9000;
private static final int VERTICAL_OFFSET = -9000;
private static final String DEFAULT_CONTAINER_ID = "chosen_container__";
private static final Set INJECTED_RESOURCES = new HashSet();
private static int idCounter;
protected boolean activeField;
// TODO
protected int choices;
protected Function clickTestAction;
protected boolean resultsShowing;
protected GQuery searchChoices;
protected GQuery searchContainer;
private GQuery $selectElement;
private boolean allowSingleDeselect;
private GQuery container;
private String containerId;
private ChosenCss css;
private List selectedValues = new ArrayList();
private String defaultText;
private GQuery dropdown;
private EventBus eventBus;
private int fWidth;
private boolean isDisabled;
private boolean isRTL;
private boolean customFilter;
private boolean mouseOnContainer;
private ChosenOptions options;
private GQuery resultHighlight;
private String resultsNoneFound;
private GQuery searchField;
private GQuery searchResults;
private SelectElement selectElement;
private List selectItems;
private GQuery selectedItem;
private HandlerRegistration updateEventHandlerRegistration;
private ResultsFilter resultsFilter;
public GQuery getContainer() {
return container;
}
public String getCurrentValue() {
if (!selectedValues.isEmpty()) {
return selectedValues.get(selectedValues.size() - 1);
}
return null;
}
public ChosenOptions getOptions() {
return options;
}
/**
* Return the highlighted result or null if the.
*/
public GQuery getResultHighlight() {
return resultHighlight;
}
public SelectElement getSelectElement() {
return selectElement;
}
public List getSelectItems() {
return selectItems;
}
public List getSelectedValues() {
return selectedValues;
}
public boolean isMultiple() {
return false;
}
public void rebuildResultItems() {
rebuildResultItems(false);
}
protected boolean activateField() {
activeTabIndexProperty();
container.addClass(css.chznContainerActive());
activeField = true;
searchField.val(searchField.val());
searchField.focus();
return false;
}
protected void activeTabIndexProperty() {
if (!activeField) {
searchField.attr(TABINDEX_PROPERTY, selectedItem.attr(TABINDEX_PROPERTY));
selectedItem.attr(TABINDEX_PROPERTY, -1);
}
}
protected void bind() {
container.mousedown(new Function() {
@Override
public boolean f(Event e) {
return containerMouseDown(e);
}
});
container.mouseup(new Function() {
@Override
public boolean f(Event e) {
return containerMouseUp(e);
}
});
container.mouseenter(new Function() {
@Override
public boolean f(Event e) {
mouseOnContainer = true;
return false;
}
});
container.mouseleave(new Function() {
@Override
public boolean f(Event e) {
mouseOnContainer = false;
return false;
}
});
searchResults.mouseup(new Function() {
@Override
public boolean f(Event e) {
return searchResultsMouseUp(e);
}
});
searchResults.mouseover(new Function() {
@Override
public boolean f(Event e) {
return searchResultsMouseOver(e);
}
});
searchResults.mouseout(new Function() {
@Override
public boolean f(Event e) {
return searchResultsMouseOut(e);
}
});
if (eventBus != null) {
updateEventHandlerRegistration =
eventBus.addHandler(UpdatedEvent.getType(), new UpdatedEvent.UpdatedHandler() {
public void onUpdated() {
update();
}
});
}
searchField.blur(new Function() {
@Override
public boolean f(Event e) {
return inputBlur();
}
});
searchField.keyup(new Function() {
@Override
public boolean f(Event e) {
return keyupChecker(e);
}
});
searchField.keydown(new Function() {
@Override
public boolean f(Event e) {
return keydownChecker(e);
}
});
searchField.on("paste", new Function() {
@Override
public void f() {
doSearch();
}
});
searchField.on("drop", new Function() {
@Override
public void f() {
doSearch();
}
});
}
protected abstract SafeHtml buildContainerHtml(String defaultText, SafeStylesBuilder ssb);
protected String buildDropdownWidth(int ddWidth) {
return ddWidth + "px";
}
protected StringBuilder buildOptionStyleClass(OptionItem option) {
StringBuilder classes = new StringBuilder();
if (option.isSelected()) {
classes.append(css.resultSelected()).append(" ");
}
if (option.getGroupArrayIndex() != -1) {
classes.append(css.groupOption()).append(" ");
}
if (option.getClasses() != null) {
classes.append(option.getClasses());
}
return classes;
}
protected int calculateDropdownTop() {
int ddTop;
DropdownPosition dropdownPosition = options.getDropdownPosition();
switch (dropdownPosition) {
case ABOVE:
ddTop = positionAbove();
break;
case AUTO:
if (container.hasClass(css.resultAbove())) {
// if dropdown is already above, let it there.
ddTop = positionAbove();
} else if (options.getDropdownBoundaries() == null && options.getDropdownBoundariesProvider() == null) {
ddTop = positionRelativeToWindow();
} else {
ddTop = positionRelativeToBoundaries();
}
break;
case BELOW:
default:
ddTop = positionBelow();
break;
}
return ddTop;
}
protected void choiceDestroy(GQuery link) {
choices--;
showSearchFieldDefault(defaultText);
if (isMultiple() && choices > 0 && searchField.val() != null && searchField.val().length() < 1) {
resultsHide();
}
resultDeselect(Integer.parseInt(link.attr("rel")), link.attr("data-chosen-value"));
link.parents("li").first().remove();
}
protected boolean containerMouseDown(Event e) {
if (isDisabled) {
return true;
}
Element mouseDownTarget = e.getEventTarget().cast();
GQuery $e = $(mouseDownTarget);
boolean targetCloseLink = $e.hasClass(css.searchChoiceClose());
if (!resultsShowing) {
e.stopPropagation();
}
if (!targetCloseLink) {
containerMouseDownImpl(e, $e);
}
return false;
}
protected void containerMouseDownImpl(Event e, GQuery element) {
if (!activeField) {
$(document).click(clickTestAction);
resultsShow();
} else if (!element.isEmpty() && (element.get(0) == selectedItem.get(0)
|| element.parents("a." + css.chznSingle()).length() > 0)) {
e.preventDefault();
resultsToggle();
}
if (!element.hasClass(css.activeResult())) {
activateField();
}
}
protected void deactiveTabIndexProperty() {
selectedItem.attr(TABINDEX_PROPERTY, searchField.attr(TABINDEX_PROPERTY));
searchField.attr(TABINDEX_PROPERTY, "-1");
}
protected void fireEvent(ChosenEvent event) {
if (eventBus != null) {
eventBus.fireEvent(event);
}
}
protected String getContainerClass() {
return css.chznContainer();
}
protected String getContainerId() {
return containerId;
}
protected ChosenCss getCss() {
return css;
}
protected GQuery getDropdown() {
return dropdown;
}
protected GQuery getSearchChoices() {
return searchChoices;
}
protected void setSearchChoices(GQuery searchChoices) {
this.searchChoices = searchChoices;
}
protected GQuery getSearchContainer() {
return searchContainer;
}
protected void setSearchContainer(GQuery searchContainer) {
this.searchContainer = searchContainer;
}
protected GQuery getSearchField() {
return searchField;
}
protected GQuery getSearchResults() {
return searchResults;
}
protected GQuery getSelectedItem() {
return selectedItem;
}
protected void setSelectedItem(GQuery selectedItem) {
this.selectedItem = selectedItem;
}
protected int getSideBorderPadding(GQuery elmt, boolean isHidden) {
if (isHidden) {
// bug in gquery when one parent of the element is hidden
return (int) (elmt.cur("padding-left", true) + elmt.cur("padding-right",
true) + elmt.cur("border-left-width", true) + elmt.cur("border-right-width", true));
}
return elmt.outerWidth() - elmt.width();
}
protected void init(SelectElement element, ChosenOptions options, EventBus eventBus) {
this.selectElement = element;
this.options = options;
this.eventBus = eventBus;
$selectElement = $(selectElement);
setDefaultValues();
setDefaultText();
setup();
bind();
finishSetup();
}
protected void initSearchElement(int ddWidth, boolean isHidden) {
setSearchContainer(getContainer().find("div." + getCss().chznSearch()).first());
setSelectedItem(getContainer().find("." + getCss().chznSingle()).first());
}
protected boolean isRTL() {
return isRTL;
}
protected boolean isDisabled() {
return isDisabled;
}
protected boolean keydownChecker(Event e) {
int stroke = e.getKeyCode();
searchFieldScale(fWidth);
switch (stroke) {
case TAB:
onTabKeydown(e);
break;
case ENTER:
if (resultsShowing) {
e.preventDefault();
return false;
}
return true;
case UP_ARROW:
e.preventDefault();
keyupArrow();
return false;
case DOWN_ARROW:
this.keydownArrow();
return false;
}
return true;
}
protected boolean maxSelectedOptionsReached() {
return options.getMaxSelectedOptions() != -1 && options.getMaxSelectedOptions() <= choices;
}
protected void onKeydownBackstroke() {
resultClearHighlight();
resultsSearch();
}
protected void onTabKeydown(Event e) {
mouseOnContainer = false;
}
protected int positionBelow() {
return container.outerHeight() - 1;
}
protected GQuery querySelectedResults() {
return searchResults.find("." + css.resultSelected() + "." + css.activeResult());
}
protected void release() {
if (updateEventHandlerRegistration != null) {
updateEventHandlerRegistration.removeHandler();
updateEventHandlerRegistration = null;
}
// empty the searchResult to speed up the container.remove()
if (searchResults != null) {
searchResults.html("");
}
// remove method clean listener and cie
container.remove();
$selectElement.removeClass(css.chznDone(), "chzn-done").show();
}
protected void resetSelectedItem() {
selectedItem.find("span").text(defaultText);
selectedItem.addClass(css.chznDefault());
}
protected void resultSelect(Event e) {
if (resultHighlight != null) {
GQuery high = resultHighlight;
resultClearHighlight();
resultDeactivate(high, true);
high.addClass(css.resultSelected());
OptionItem item = getOptionItem(high);
item.setSelected(true);
OptionElement option = selectElement.getOptions().getItem(item.getOptionsIndex());
if (option != null) {
option.setSelected(true);
}
addChoice(item);
winnowResultsClear();
String oldValue = getCurrentValue();
String newValue = item.getValue();
selectedValues.add(newValue);
onResultSelected(item, newValue, oldValue, e.getMetaKey());
searchFieldScale(fWidth);
}
}
protected OptionItem getOptionItem(GQuery result) {
String highId = result.attr("id");
int position = Integer.parseInt(highId.substring(highId.lastIndexOf("_") + 1));
return (OptionItem) selectItems.get(position);
}
protected void onResultSelected(OptionItem item, String newValue, String oldValue, boolean metaKeyPressed) {
fireChosenChangeEventIfNotEqual(item, newValue, oldValue);
resultsHide();
}
protected void fireChosenChangeEventIfNotEqual(OptionItem item, String newValue, String oldValue) {
if (oldValue == null || !oldValue.equals(newValue)) {
fireEvent(new ChosenChangeEvent(newValue, item.getArrayIndex(), this));
}
}
protected void addChoice(OptionItem item) {
selectedItem.find("span").text(item.getText());
if (allowSingleDeselect) {
singleDeselectControlBuild();
}
selectedValues.clear();
}
protected void resultsBuild(boolean init) {
resultsBuild(init, defaultText, customFilter);
}
protected void resultsBuild(boolean init, String defaultText, boolean customFilter) {
selectItems = new SelectParser().parse(selectElement);
rebuildResultItems(init);
}
protected void resultsHide() {
if (!resultsShowing) {
return;
}
if (selectedItem != null) {
selectedItem.removeClass(css.chznSingleWithDrop());
}
resultClearHighlight();
fireEvent(new HidingDropDownEvent(this));
dropdown.css(isRTL ? "right" : "left", HORIZONTAL_OFFSET + "px");
dropdown.css("top", VERTICAL_OFFSET + "px");
container.removeClass(css.resultAbove());
resultsShowing = false;
}
protected void resultsResetCleanup() {
if (selectedItem != null) {
selectedItem.find("abbr").remove();
}
}
protected void resultsSearch() {
if (resultsShowing) {
winnowResults(resultsShowing);
} else {
resultsShow();
}
}
protected boolean resultsShow() {
if (!beforeShowResult()) {
return false;
}
fireEvent(new ShowingDropDownEvent(this));
resultsShowing = true;
searchField.val(searchField.val());
winnowResults(true);
positionDropdownResult();
searchField.focus();
return true;
}
protected boolean beforeShowResult() {
return true;
}
protected void searchFieldScale(int fWidth) {
// do nothing
}
protected boolean searchResultsMouseOut(Event e) {
Element targetEl = e.getEventTarget().cast();
GQuery $e = $(targetEl);
if ($e.hasClass(css.activeResult()) || $e.parents("." + css.activeResult()).length() > 0) {
resultClearHighlight();
}
return false;
}
protected boolean searchResultsMouseUp(Event e) {
Element targetEvent = e.getEventTarget().cast();
GQuery $e = $(targetEvent);
GQuery target =
$e.hasClass(css.activeResult()) ? $e : $e.parents("." + css.activeResult()).first();
if (!target.isEmpty()) {
resultHighlight = target;
resultSelect(e);
}
return false;
}
protected void setTabIndexProperty(String tabIndexProperty) {
selectedItem.attr(TABINDEX_PROPERTY, tabIndexProperty);
searchField.attr(TABINDEX_PROPERTY, -1);
}
protected void setupDisabledSearchField() {
container.addClass(css.chznDisabled());
InputElement.as(searchField.get(0)).setDisabled(true);
}
protected void setupEnabledSearchField() {
container.removeClass(css.chznDisabled());
InputElement.as(searchField.get(0)).setDisabled(false);
}
protected boolean shouldActivateResult(GQuery result) {
return true;
}
protected void showSearchFieldDefault(String defaultText) {
searchField.val("");
searchField.removeClass(css.defaultClass());
}
protected void update() {
setDefaultText();
resultClearHighlight();
resultsBuild(false);
}
void noResults(String terms) {
GQuery noResults =
$(ChosenTemplate.templates.noResults(css.noResults(), resultsNoneFound).asString());
noResults.find("span").html(terms);
searchResults.append(noResults);
}
void positionDropdownResult() {
int ddTop = calculateDropdownTop();
if (ddTop < 0) {
dropdown.prepend(searchResults);
container.addClass(css.resultAbove());
}
dropdown.css("top", ddTop + "px").css(isRTL ? "right" : "left", "0");
}
void resultActivate(GQuery query) {
query.addClass(css.activeResult());
}
void resultClearHighlight() {
if (resultHighlight != null) {
resultHighlight.removeClass(css.highlighted());
resultHighlight = null;
}
}
void resultDeactivate(GQuery query) {
resultDeactivate(query, false);
}
boolean searchResultsMouseOver(Event e) {
Element targetEl = e.getEventTarget().cast();
GQuery $e = $(targetEl);
GQuery target =
$e.hasClass(css.activeResult()) ? $e : $e.parents("." + css.activeResult()).first();
if (!target.isEmpty()) {
resultDoHighlight(target);
}
return false;
}
protected void resultDeactivate(GQuery query, boolean selected) {
if (!selected) {
query.removeClass(getCss().activeResult(), getCss().foundResult());
} else {
searchResults.find("." + css.resultSelected()).removeClass(css.resultSelected());
selectedItem.removeClass(css.chznDefault());
}
}
void winnowResultsSetHighlight() {
if (resultHighlight == null) {
GQuery selectedResults = querySelectedResults();
GQuery doHigh =
selectedResults != null && selectedResults.length() > 0 ? selectedResults.first()
: getFirstActive();
if (doHigh != null) {
resultDoHighlight(doHigh);
}
}
}
private void activateFirstResult() {
GQuery firstActive = getActiveResults().first();
resultDoHighlight(firstActive);
}
private void activateLastResult() {
GQuery lastActive = getActiveResults().last();
resultDoHighlight(lastActive);
}
private void blurTest() {
if (!activeField && container.hasClass(css.chznContainerActive())) {
closeField();
}
}
private String buildContainerId() {
String id;
String selectElementId = selectElement.getId();
if (selectElementId != null && selectElementId.length() > 0) {
id = containerIdRegExp.replace(selectElementId, "_");
} else {
id = generateContainerId();
selectElement.setId(id);
}
id += "_chzn";
return id;
}
protected void closeField() {
$(document).unbind("click", clickTestAction);
deactiveTabIndexProperty();
activeField = false;
resultsHide();
container.removeClass(css.chznContainerActive());
winnowResultsClear();
showSearchFieldDefault(defaultText);
searchFieldScale(fWidth);
}
private boolean containerMouseUp(Event e) {
Element target = e.getEventTarget().cast();
GQuery $e = $(target);
if (!$e.isEmpty() && "ABBR".equalsIgnoreCase($e.get(0).getNodeName()) && !isDisabled) {
resultsReset();
return false;
}
return true;
}
private SafeHtml createOption(OptionItem item) {
SafeHtmlBuilder builder = new SafeHtmlBuilder();
builder.append(fromTrustedString("")).appendEscaped(item.getText());
builder.append(fromTrustedString(" "));
return builder.toSafeHtml();
}
private void deselect(String value) {
List newValues = new ArrayList();
boolean found = false;
for (String s : selectedValues) {
if (found || !s.equals(value)) {
newValues.add(s);
} else {
// in case of the same item has been selected many times
found = true;
}
}
selectedValues = newValues;
}
private void doSearch() {
Scheduler.get().scheduleDeferred(new Scheduler.ScheduledCommand() {
@Override
public void execute() {
resultsSearch();
}
});
}
private void finishSetup() {
$selectElement.addClass(css.chznDone(), "chzn-done");
}
private String generateContainerId() {
String id = DEFAULT_CONTAINER_ID + idCounter++;
while (!$("#" + id).isEmpty()) {
idCounter++;
id = DEFAULT_CONTAINER_ID + idCounter;
}
return id;
}
private GQuery getActiveResults() {
return searchResults.find("li." + css.activeResult());
}
private GQuery getFirstActive() {
for (Element element : searchResults.elements()) {
GQuery gq = $(element);
if (gq.hasClass(css.activeResult())) {
return gq;
}
}
return $();
}
private boolean inputBlur() {
if (!mouseOnContainer) {
activeField = false;
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
public boolean execute() {
blurTest();
return false;
}
}, 100);
}
return false;
}
private boolean isDetached(GQuery element) {
return element.parents().filter("body").isEmpty();
}
private boolean isNotResultHighlighted() {
return resultHighlight == null || isDetached(resultHighlight);
}
private void keydownArrow() {
if (isNotResultHighlighted()) {
activateFirstResult();
} else if (resultsShowing) {
// TODO should be replaced by :
// GQuery nextSibling = resultHighlight.nextAll("li."+css.activeResult()).first();
// but performance is bad... See http://code.google.com/p/gwtquery/issues/detail?id=146
GQuery nextSibling = resultHighlight.next();
while (!nextSibling.isEmpty() && !nextSibling.is("li." + css.activeResult())) {
nextSibling = nextSibling.next();
}
resultDoHighlight(nextSibling);
}
if (!resultsShowing) {
resultsShow();
}
}
private void keyupArrow() {
if (!resultsShowing) {
resultsShow();
} else if (isNotResultHighlighted()) {
activateLastResult();
} else if (resultHighlight != null) {
// TODO should be replaced by :
// GQuery prevSibs = resultHighlight.prevAll("li." + css.activeResult());
// but performance is bad... See http://code.google.com/p/gwtquery/issues/detail?id=146
GQuery prevSibling = resultHighlight.prev();
while (!prevSibling.isEmpty() && !prevSibling.is("li." + css.activeResult())) {
prevSibling = prevSibling.prev();
}
if (prevSibling.length() > 0) {
resultDoHighlight(prevSibling.first());
} else {
if (choices > 0) {
resultsHide();
}
resultClearHighlight();
}
}
}
private boolean keyupChecker(Event e) {
int stroke = e.getKeyCode();
searchFieldScale(fWidth);
switch (stroke) {
case BACKSPACE:
onKeydownBackstroke();
break;
case ENTER:
if (resultsShowing) {
resultSelect(e);
}
return true;
case ESCAPE:
if (resultsShowing) {
resultsHide();
}
return false;
case TAB:
case SHIFT:
case CTRL:
case UP_ARROW:
case DOWN_ARROW:
case LEFT_WINDOW_KEY:
// do nothing
break;
default:
resultsSearch();
break;
}
return true;
}
private void noResultClear() {
searchResults.find("." + css.noResults()).remove();
}
private int positionAbove() {
return -dropdown.outerHeight();
}
private int positionRelativeToBoundaries() {
Element dropdownBoundaries = options.getDropdownBoundaries();
if (dropdownBoundaries == null) {
dropdownBoundaries = options.getDropdownBoundariesProvider().getDropdownBoundaries();
}
GQuery ddContainer = $(dropdownBoundaries);
int ddContainerOffsetTop = ddContainer.offset().top;
int containerOffsetTop = container.offset().top;
int spaceAbove = containerOffsetTop - ddContainerOffsetTop;
int spaceBelow = ddContainer.outerHeight() - spaceAbove - container.outerHeight();
int ddHeight = dropdown.outerHeight();
return spaceBelow < ddHeight ? positionAbove() : positionBelow();
}
private int positionRelativeToWindow() {
int ddHeight = dropdown.outerHeight();
int spaceBelow = Window.getClientHeight() - container.offset().top - container.outerHeight();
return spaceBelow < ddHeight ? positionAbove() : positionBelow();
}
private void rebuildResultItems(boolean init) {
SafeHtmlBuilder content = new SafeHtmlBuilder();
SafeHtmlBuilder optionsHtml = new SafeHtmlBuilder();
selectedValues = new ArrayList();
for (SelectItem item : selectItems) {
if (item.isGroup()) {
SafeHtml result = resultAddGroup((GroupItem) item);
if (result != null) {
content.append(result);
}
} else {
OptionItem optionItem = (OptionItem) item;
if (optionItem.isEmpty()) {
continue;
}
if (customFilter) {
optionsHtml.append(createOption(optionItem));
}
SafeHtml optionHtml = resultAddOption(optionItem);
if (optionHtml != null) {
content.append(optionHtml);
}
if (optionItem.isSelected()) {
addChoice(optionItem);
selectedValues.add(optionItem.getValue());
}
}
}
isDisabled = selectElement.isDisabled();
if (isDisabled) {
setupDisabledSearchField();
} else {
setupEnabledSearchField();
}
if (init) {
showSearchFieldDefault(defaultText);
searchFieldScale(fWidth);
}
if (customFilter) {
// keep the html select element synchronized with the new result.
$selectElement.html(optionsHtml.toSafeHtml().asString());
}
searchResults.html(content.toSafeHtml().asString());
if (resultsShowing) {
positionDropdownResult();
}
}
private SafeHtml resultAddGroup(GroupItem group) {
if (!group.isDisabled()) {
group.domId = containerId + "_g_" + group.getArrayIndex();
return ChosenTemplate.templates.group(group.domId, css.groupResult(), group.getLabel());
} else {
return null;
}
}
private SafeHtml resultAddOption(OptionItem option) {
if (!option.isDisabled()) {
option.domId = containerId + "_o_" + option.getArrayIndex();
StringBuilder classes = buildOptionStyleClass(option);
classes.append(" ").append(css.activeResult());
SafeStyles safeStyles = SafeStylesUtils.fromTrustedString(option.getStyle());
if (option.getHtml() != null && !option.getHtml().trim().isEmpty()) {
SafeHtml html = fromTrustedString(option.getHtml());
return ChosenTemplate.templates.option(option.getDomId(), classes.toString().trim(), safeStyles, html);
} else {
return ChosenTemplate.templates.option(option.getDomId(), classes.toString().trim(), safeStyles,
option.getText());
}
}
return null;
}
private void resultDeselect(int index, String value) {
if (index < selectItems.size()) {
OptionItem item = (OptionItem) selectItems.get(index);
if (item.getValue().equals(value)) {
item.setSelected(false);
// select option in original element
OptionElement option = selectElement.getOptions().getItem(item.getOptionsIndex());
if (option != null) {
option.setSelected(false);
}
$("#" + containerId + "_o_" + index).removeClass(css.resultSelected()).addClass(
css.activeResult()).show();
}
}
resultClearHighlight();
winnowResults(false);
deselect(value);
fireEvent(new ChosenChangeEvent(value, index, false, this));
searchFieldScale(fWidth);
}
protected void resultDoHighlight(GQuery el) {
if (el == null || el.length() == 0 || isDetached(el)) {
return;
}
resultClearHighlight();
resultHighlight = el;
el.addClass(css.highlighted());
int searchResultHeight = searchResults.innerHeight();
int visibleTop = searchResults.scrollTop();
int visibleBottom = searchResultHeight + visibleTop;
int highTop = resultHighlight.position().top + searchResults.scrollTop();
int highBottom = highTop + resultHighlight.outerHeight();
if (highBottom >= visibleBottom) {
int toScroll = highBottom - searchResultHeight;
searchResults.scrollTop(toScroll > 0 ? toScroll : 0);
} else if (highTop < visibleTop) {
searchResults.scrollTop(highTop);
}
}
private void resultsReset() {
OptionElement firstoption = selectElement.getOptions().getItem(0);
selectedValues = new ArrayList();
if (firstoption != null) {
firstoption.setSelected(true);
selectedValues.add(firstoption.getValue());
}
resetSelectedItem();
showSearchFieldDefault(defaultText);
resultsResetCleanup();
fireEvent(new ChosenChangeEvent(null, 0, this));
if (activeField) {
resultsHide();
}
}
private void resultsToggle() {
if (resultsShowing) {
resultsHide();
} else {
resultsShow();
}
}
private void setDefaultText() {
String dataPlaceHolder = selectElement.getAttribute("data-placeholder");
if (dataPlaceHolder != null && dataPlaceHolder.length() > 0) {
defaultText = dataPlaceHolder;
} else if (isMultiple()) {
if (options.getPlaceholderTextMultiple() != null) {
defaultText = options.getPlaceholderTextMultiple();
} else if (options.getPlaceholderText() != null) {
defaultText = options.getPlaceholderText();
} else {
defaultText = "Select Some Options";
}
} else {
if (options.getPlaceholderTextSingle() != null) {
defaultText = options.getPlaceholderTextSingle();
} else if (options.getPlaceholderText() != null) {
defaultText = options.getPlaceholderText();
} else {
defaultText = "Select an Option";
}
}
String dataNoResultsText = selectElement.getAttribute("data-no_results_text");
if (dataNoResultsText != null && dataNoResultsText.length() > 0) {
resultsNoneFound = dataNoResultsText;
} else if (options.getNoResultsText() != null) {
resultsNoneFound = options.getNoResultsText();
} else {
resultsNoneFound = "No results match";
}
}
private void setDefaultValues() {
clickTestAction = new Function() {
@Override
public boolean f(Event e) {
return testActiveClick(e);
}
};
activeField = false;
mouseOnContainer = false;
resultsShowing = false;
NodeList optionsList = selectElement.getOptions();
allowSingleDeselect =
options.isAllowSingleDeselect() && optionsList.getLength() > 0
&& "".equals(optionsList.getItem(0).getText());
choices = 0;
if (options.getResources() != null) {
css = options.getResources().css();
} else {
css = GWT.create(Resources.class).css();
}
Class resourceClass = options.getResources() != null ? options.getResources().getClass() : Resources.class;
if (!INJECTED_RESOURCES.contains(resourceClass)) {
StyleInjector.inject(css.getText(), true);
INJECTED_RESOURCES.add(resourceClass);
}
resultsFilter = options.getResultFilter();
customFilter = resultsFilter != null;
if (!customFilter) {
resultsFilter = new ClientResultsFilter();
}
}
private void setTabIndex() {
String tabIndexProperty = $selectElement.attr(TABINDEX_PROPERTY);
if (tabIndexProperty != null && tabIndexProperty.length() > 0) {
$selectElement.attr(TABINDEX_PROPERTY, -1);
setTabIndexProperty(tabIndexProperty);
}
}
private void setup() {
boolean isHidden = false;
containerId = buildContainerId();
fWidth = $selectElement.outerWidth();
isRTL = LocaleInfo.getCurrentLocale().isRTL() || $selectElement.hasClass("chzn-rtl");
// Temporary fix. IIf the select element is inside a hidden container
// GQuery cannot get the size of the select element.
if (fWidth == 0) {
$("body").append("
");
GQuery tempDiv = $("#gwt_chosen_temp_div");
tempDiv.append($selectElement.clone());
fWidth = tempDiv.children("select").outerWidth();
tempDiv.remove();
isHidden = fWidth > 0;
}
String containerClass = getContainerClass();
String cssClasses = isRTL ? containerClass + " " + css.chznRtl() : containerClass;
// recopy classes present on the select element
cssClasses += " " + selectElement.getClassName();
GQuery containerTemp =
$(ChosenTemplate.templates.container(containerId, cssClasses).asString()).width(fWidth);
final SafeStylesBuilder ssb = new SafeStylesBuilder();
if (isRTL) {
ssb.right(HORIZONTAL_OFFSET, Style.Unit.PX);
} else {
ssb.left(HORIZONTAL_OFFSET, Style.Unit.PX);
}
ssb.top(VERTICAL_OFFSET, Style.Unit.PX);
containerTemp.html(buildContainerHtml(defaultText, ssb).asString());
// insert container after the select elements
$selectElement.hide().after(containerTemp);
container = $("#" + containerId);
container.addClass(isMultiple() ? css.chznContainerMulti() : css.chznContainerSingle());
dropdown = container.find("div." + css.chznDrop()).first();
int ddWidth = fWidth - getSideBorderPadding(dropdown, isHidden);
dropdown.css("width", buildDropdownWidth(ddWidth));
searchField = container.find("input").first();
searchResults = container.find("ul." + css.chznResults()).first();
searchFieldScale(fWidth);
initSearchElement(ddWidth, isHidden);
resultsBuild(true);
setTabIndex();
fireEvent(new ReadyEvent(this));
}
private void singleDeselectControlBuild() {
if (allowSingleDeselect && selectedItem.find("abbr").isEmpty()) {
selectedItem.find("span").first().after(
"
